I'm maintaining healthy skepticism when it comes to the Roxanne.
I'm actually very fond of the sound of Jerry Harvey's CIEMs---especially with the Freq-Phase updates---but the build of their products has disappointed me. Their former flagship, the JH-3A, has a lot of issues. The amp produces a lot of electrical noise, including ground loop type buzz (regardless of where I use it), and there's a low level whine present when the bass is boosted using the amp. The cable sockets on the shells aren't finished well, and the pins stick out quite a bit; despite that they're actually incredibly difficult to remove and re-insert. The stems of the shells aren't fully finished and are instead left rough, which is problematic on something meant to go in your ears. Obviously not everyone has had these issues, but they are all present on my set which was ordered earlier this year. This was their previous flagship product, and it's a product that costs roughly what the Roxanne is slated to cost. The demo unit in Jude's video looked really nice, and I'm sure the initial batch will be of similar quality. I just hope they maintain this standard later on too.
Also from a conceptual standpoint, there are two things I'd worry about potentially going wrong. The first is the sheer number of drivers. I don't subscribe to the "moar drivers = better" school, and some of the most impressive CIEMs I've heard recently have fewer drivers than a lot of these newer models. More drivers tend to strike me as more opportunities for things to go wrong, more chances for the sound to be disjointed and lack cohesiveness. Secondly, the bass boost in the new cable system seems like an opportunity to introduce distortion into the mix. From Jude's brief impressions however, I'm looking forward to these getting it right. Despite my not finding a particular advantage to cramming as many drivers as possible into a shell, I do maintain an interest in hearing these "boundary pushing" models just because they are so complex, and overcoming the difficulty of getting everything to cooperate in tandem is impressive in its own right if ultimately excessive. After all, audiophilia is often about excess and the indulgence therein.
As is so often the case, I find the attachments I form to these things seemingly arbitrary. This new flagship appeals to me first and foremost because it's named Roxanne. The entire shell being made of carbon fiber is particularly obscene in the non-functional way a car steering wheel or shifter knob being made of carbon fiber is obscene, a yuppie ornament that implies a performance boost: the psychosomatic whisper that these things sound faster. Still it reminds me of the Sony Qualia 010 in all of its excessive, obscene glory.
There are four CIEM companies I'm thinking about doing business with in the coming months. That's kind of disturbing.
Pretty much my thoughts also - JH13 already has a lot of drivers, twice as much to go wrong as a 3 driver IEM, 3 times a dual driver. With 12 drivers, how would you even know if something went wrong? I had the same thoughts re carbon fibre - difficult material to work with just increases the chance that something is going to go wrong with the fit - probably take longer to make - and really nobody's going to see the inside of your CIEM when being worn, and when not being worn don't nobody want to see your wax covered customs. Bass boost - again another chance to introduce coloration or distortion into the system, and then to redesign the connector just of the bass boost circuit... Typically when I see bass boost on anything, or when bass is the main marketing point, this is what tells me the product is not for me. But yeah, I', sure that for some people it could be a delightfully excessive thing to consume/desire, and just maybe there will be some sort of performance gain from more drivers, but personally I'm really not hyped.